﻿art. 
  1 
  AMERICAN 
  P1.0IAR1INAE 
  McATEE 
  AND 
  MALLOCH 
  113 
  

  

  in 
  these 
  respects, 
  eighth 
  with 
  a 
  small, 
  triangular 
  median 
  projection, 
  

   the 
  supero-posterior 
  angles 
  rounded, 
  and 
  the 
  spiracles 
  not 
  conspicu- 
  

   ously 
  pedunculate 
  (fig. 
  182). 
  

  

  Female. 
  — 
  Similar 
  to 
  the 
  male 
  in 
  color, 
  pilosity 
  somewhat 
  less 
  con- 
  

   spicuous, 
  pollinosity 
  rather 
  more 
  so; 
  abdomen 
  widest 
  at 
  fifth 
  seg- 
  

   ment, 
  tapering 
  gradually 
  both 
  fore 
  and 
  aft, 
  tubercle 
  of 
  sixth 
  tergite, 
  

   projecting 
  posteriorly, 
  bluntly 
  falcate; 
  seventh 
  tergite 
  with 
  'a 
  straight 
  

   median 
  porrect 
  process 
  extending 
  considerably 
  beyond 
  the 
  promi- 
  

   nent 
  but 
  not 
  produced 
  lateral 
  angles; 
  eighth 
  tergite 
  rounded 
  tri- 
  

   angular 
  somewhat 
  broader 
  than 
  long; 
  ninth 
  with 
  the 
  sides 
  convexly 
  

   sloping 
  apically, 
  the 
  median 
  line 
  keeled 
  and 
  apiculate 
  (fig. 
  183) 
  ; 
  

   sternites 
  2-4 
  slightly 
  emarginate 
  medianly, 
  and 
  sinuate 
  laterally, 
  en- 
  

   tire 
  posterior 
  margins 
  of 
  sternites 
  5 
  and 
  6 
  anteriorly 
  arcuate, 
  the 
  

   latter 
  most 
  deeply, 
  this 
  sclerite 
  being 
  a 
  fifth 
  longer 
  on 
  sides 
  than 
  

   in 
  middle: 
  seventh 
  sternite 
  concave 
  on 
  sides 
  of 
  posterior 
  margin, 
  

   with 
  a 
  rather 
  prominent 
  rounded 
  median 
  projection 
  ; 
  eighth 
  sternite 
  

   visible 
  as 
  an 
  elliptical 
  plate 
  on 
  each 
  side 
  (fig. 
  184). 
  

  

  Length, 
  22-24 
  mm. 
  

  

  Tlolotjfpe. 
  — 
  Male 
  and 
  allotype 
  female. 
  Aracataca, 
  Magdalena, 
  Co- 
  

   lombia, 
  Aug. 
  6, 
  1920, 
  in 
  heavy 
  forest 
  with 
  dense 
  undergrowth, 
  J. 
  A. 
  

   G. 
  Kehn 
  (Acad. 
  Nat, 
  Sci., 
  Phila.) 
  

  

  GHILIANELLA 
  CUNEATA, 
  new 
  species. 
  

  

  Female. 
  — 
  Yellowish 
  to 
  reddish 
  brown, 
  the 
  leg 
  bands 
  more 
  or 
  less 
  

   distinct, 
  the 
  abdomen 
  marbled 
  with 
  fuscous; 
  pubescence 
  in 
  no 
  way 
  

   unusual; 
  abdomen 
  widened 
  gradually 
  to 
  apex 
  of 
  sixth 
  segment, 
  then 
  

   tapering 
  to 
  apex 
  of 
  seventh 
  ; 
  hind 
  margin 
  of 
  all 
  of 
  the 
  tergites 
  promi- 
  

   nent 
  medianly, 
  sixth 
  with 
  large 
  slightly 
  falcate 
  tubercle, 
  and 
  the 
  

   posterior 
  angles 
  a 
  little 
  prominent 
  and 
  expanded; 
  the 
  hind 
  margin 
  

   of 
  the 
  seventh 
  with 
  a 
  short, 
  median, 
  pointed 
  tubercle 
  which 
  extends 
  

   slightly 
  farther 
  posteriorly 
  than 
  the 
  prominent 
  lateral 
  angles 
  ; 
  eighth 
  

   tergite 
  considerably 
  wider 
  than 
  long, 
  with 
  transverse 
  corrugations 
  

   and 
  a 
  central 
  keel 
  which 
  is 
  produced 
  in 
  a 
  point 
  slightly 
  beyond 
  gen- 
  

   eral 
  line 
  of 
  the 
  posterior 
  margin; 
  ninth 
  tergite 
  much 
  longer 
  than 
  

   eighth, 
  somewhat 
  wrinkled 
  transversely, 
  the 
  narrowed 
  apex 
  with 
  a 
  

   broad 
  prominent 
  keel; 
  sutures 
  between 
  sternites 
  2-6 
  slightly 
  anteri- 
  

   orly 
  directed, 
  that 
  between 
  six 
  and 
  seven 
  quite 
  concave 
  anteriorly; 
  

   sternite 
  seven 
  about 
  a 
  fourth 
  longer 
  than 
  six 
  on 
  the 
  median 
  line, 
  its 
  

   hind 
  margin 
  slightly 
  concave 
  laterally, 
  somewhat 
  produced 
  medianly, 
  

   the 
  extreme 
  apex 
  with 
  a 
  small 
  emargination 
  ; 
  eighth 
  sternite 
  narrowly 
  

   visible 
  on 
  each 
  side. 
  

  

  Length, 
  23-26 
  mm. 
  

  

  Holotype. 
  — 
  Female, 
  Alhajuelo, 
  Panama, 
  April 
  18, 
  1911, 
  Aug. 
  

   Busck; 
  five 
  female 
  paratypes, 
  Porto 
  Bello, 
  Panama, 
  March 
  16, 
  1911, 
  

  

  